The LS3-Powered 1993 Mazda RX-7 Race Car represents a radical departure from the original rotary-driven philosophy of the FD chassis. By integrating American small-block reliability into a lightweight Japanese platform, this build creates a formidable track weapon. The car serves as a testament to engineering creativity where performance targets take priority over purist traditions. Every modification on this vehicle aims for maximum mechanical grip and thermal efficiency under racing conditions.
Lightweight Aerodynamics and Carbon Fiber
The exterior of the Mazda features a comprehensive Seibon carbon-fiber body kit to reduce overall weight significantly. This includes the hood, front bumper, rear decklid, and wide front fenders for a more aggressive footprint. A massive 72-inch APR adjustable rear wing provides essential downforce to keep the rear end stable during high-speed cornering. Lexan windows replace heavy factory glass to lower the center of gravity even further.
Chassis Tuning and Specialized Suspension
Handling is managed by high-end Ohlins coilovers that provide precise damping control for various track surfaces. The car rides on 18-inch Forgestar wheels finished in a striking red, wrapped in sticky Nankang tires. Stopping power comes from a professional Project Mu braking system with six-piston calipers in the front. Tilton master cylinders and a dedicated brake bias controller allow the driver to fine-tune deceleration performance.
Stripped Interior and Racing Safety
The cabin is completely stripped of luxury amenities to save weight and accommodate a full safety cage. A Kirkey halo containment seat keeps the driver secure during high-G maneuvers, while a Sparco bucket remains for passengers. Diamond-plate floor panels and a carbon-look dashboard emphasize the utilitarian nature of this competitive machine. A Stack digital gauge cluster sits front and center to provide vital engine data without distraction.
Drivetrain Strength and Rear End Reliability
Power flows through an SR1 Tex Racing dogbox four-speed manual transmission designed for lightning-fast clutchless shifts. This heavy-duty gearbox is paired with a Ford 8.8-inch independent rear differential to handle the increased torque. A Fuel Safe fuel cell is mounted in the rear to meet racing safety standards and ensure consistent fuel delivery. These robust components ensure the car remains reliable during the heat of a sprint or endurance event.
Engine Specs and High Performance Output
The 6.2-liter LS3 V8 engine was professionally installed and features a Dailey external dry-sump oiling system. This setup prevents oil starvation during hard cornering, while a C&R aluminum radiator manages the engine temperatures. Dyno results from 2019 show an impressive output of 474 horsepower and 448 lb-ft of torque at the wheels. High-flow long-tube headers and a FAST fuel rail system further optimize the breathing and fueling of this V8.
Summary of the FD Race Program
This Mazda offers a unique opportunity for racers who demand a proven platform with incredible power-to-weight ratios. It arrives with a spare set of Volk Racing wheels and a clean title, making it a versatile purchase. While the body shows typical track wear, the mechanical specifications are of the highest caliber. It is a purpose-built tool designed to shave seconds off lap times and provide a visceral driving experience.
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Source: bringatrailer.com
